function clsIDCard(CardNo) { 
  this.Valid = false; 
  this.ID15 = ''; 
  this.ID18 = ''; 
  this.Local = ''; 
  if (CardNo != null) 
    this.SetCardNo(CardNo); 
} 


// 设置身份证号码，15位或者18位 
clsIDCard.prototype.SetCardNo = function(CardNo) { 
  this.ID15 = ''; 
  this.ID18 = ''; 
  this.Local = ''; 
  CardNo = CardNo.replace(" ", ""); 
  var strCardNo; 
  if (CardNo.length == 18) { 
    pattern = /^\d{17}(\d|x|X)$/; 
    if (pattern.exec(CardNo) == null) 
      return; 
    strCardNo = CardNo.toUpperCase(); 
  } else { 
    pattern = /^\d{15}$/; 
    if (pattern.exec(CardNo) == null) 
      return; 
    strCardNo = CardNo.substr(0, 6) + '19' + CardNo.substr(6, 9) 
    strCardNo += this.GetVCode(strCardNo); 
  } 
  this.Valid = this.CheckValid(strCardNo); 
} 
// 校验身份证有效性 
clsIDCard.prototype.IsValid = function() { 
  return this.Valid; 
} 
// 返回生日字符串，格式如下，1981-10-10 
clsIDCard.prototype.GetBirthDate = function() { 
  var BirthDate = ''; 
  if (this.Valid) 
    BirthDate = this.GetBirthYear() + '-' + this.GetBirthMonth() + '-' 
        + this.GetBirthDay(); 
  return BirthDate; 
} 
// 返回生日中的年，格式如下，1981 
clsIDCard.prototype.GetBirthYear = function() { 
  var BirthYear = ''; 
  if (this.Valid) 
    BirthYear = this.ID18.substr(6, 4); 
  return BirthYear; 
} 
// 返回生日中的月，格式如下，10 
clsIDCard.prototype.GetBirthMonth = function() { 
  var BirthMonth = ''; 
  if (this.Valid) 
    BirthMonth = this.ID18.substr(10, 2); 
  if (BirthMonth.charAt(0) == '0') 
    BirthMonth = BirthMonth.charAt(1); 
  return BirthMonth; 
} 
// 返回生日中的日，格式如下，10 
clsIDCard.prototype.GetBirthDay = function() { 
  var BirthDay = ''; 
  if (this.Valid) 
    BirthDay = this.ID18.substr(12, 2); 
  return BirthDay; 
} 

// 返回性别，1：男，0：女 
clsIDCard.prototype.GetSex = function() { 
  var Sex = ''; 
  if (this.Valid) 
    Sex = this.ID18.charAt(16) % 2; 
  return Sex; 
} 

// 返回15位身份证号码 
clsIDCard.prototype.Get15 = function() { 
  var ID15 = ''; 
  if (this.Valid) 
    ID15 = this.ID15; 
  return ID15; 
} 

// 返回18位身份证号码 
clsIDCard.prototype.Get18 = function() { 
  var ID18 = ''; 
  if (this.Valid) 
    ID18 = this.ID18; 
  return ID18; 
} 

// 返回所在省，例如：上海市、浙江省 
clsIDCard.prototype.GetLocal = function() { 
  var Local = ''; 
  if (this.Valid) 
    Local = this.Local; 
  return Local; 
} 

clsIDCard.prototype.GetVCode = function(CardNo17) { 
  var Wi = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1); 
  var Ai = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); 
  var cardNoSum = 0; 
  for (var i = 0; i < CardNo17.length; i++) 
    cardNoSum += CardNo17.charAt(i) * Wi[i]; 
  var seq = cardNoSum % 11; 
  return Ai[seq]; 
} 

clsIDCard.prototype.CheckValid = function(CardNo18) { 
  if (this.GetVCode(CardNo18.substr(0, 17)) != CardNo18.charAt(17)) 
    return false; 
  if (!this.IsDate(CardNo18.substr(6, 8))) 
    return false; 
  var aCity = { 
    11 : "北京", 
    12 : "天津", 
    13 : "河北", 
    14 : "山西", 
    15 : "内蒙古", 
    21 : "辽宁", 
    22 : "吉林", 
    23 : "黑龙江 ", 
    31 : "上海", 
    32 : "江苏", 
    33 : "浙江", 
    34 : "安徽", 
    35 : "福建", 
    36 : "江西", 
    37 : "山东", 
    41 : "河南", 
    42 : "湖北 ", 
    43 : "湖南", 
    44 : "广东", 
    45 : "广西", 
    46 : "海南", 
    50 : "重庆", 
    51 : "四川", 
    52 : "贵州", 
    53 : "云南", 
    54 : "西藏 ", 
    61 : "陕西", 
    62 : "甘肃", 
    63 : "青海", 
    64 : "宁夏", 
    65 : "新疆", 
    71 : "台湾", 
    81 : "香港", 
    82 : "澳门", 
    91 : "国外" 
  }; 
  if (aCity[parseInt(CardNo18.substr(0, 2))] == null) 
    return false; 
  this.ID18 = CardNo18; 
  this.ID15 = CardNo18.substr(0, 6) + CardNo18.substr(8, 9); 
  this.Local = aCity[parseInt(CardNo18.substr(0, 2))]; 
  return true; 
} 

clsIDCard.prototype.IsDate = function(strDate) { 
  var r = strDate.match(/^(\d{1,4})(\d{1,2})(\d{1,2})$/); 
  if (r == null) 
    return false; 
  var d = new Date(r[1], r[2] - 1, r[3]); 
  return (d.getFullYear() == r[1] && (d.getMonth() + 1) == r[2] && d 
      .getDate() == r[3]); 
}